CN220090717U - Hot melt adhesive filter equipment - Google Patents

Abstract

The utility model relates to a hot melt adhesive filtering device, which comprises a box body, a filter plate, a first air pump and a guide plate, wherein the box body is provided with a containing cavity, the filter plate is arranged on the box body and used for filtering hot melt adhesive, the containing cavity is separated to form a filtering cavity and a collecting cavity, and the collecting cavity is used for collecting filtered hot melt adhesive; the first air pump is provided with a suction inlet which is communicated with the collecting cavity; the guide plate is arranged in the collecting cavity and is positioned between the suction inlet and the filter plate. By arranging the guide plate between the suction inlet and the filter plate, the hot melt adhesive can be prevented from dripping and is pumped by the first air pump. Therefore, the loss of the hot melt adhesive can be reduced, and the production efficiency and the product quality are improved. Secondly, through effective filtration and reduction hot melt adhesive loss, the device can improve the production efficiency of hot melt adhesive. The adverse effect and production interruption of the hot melt adhesive are reduced, and the stability and continuity of the production line are improved.

Description

Hot melt adhesive filter equipment

Technical Field

The utility model relates to the technical field of chemical production equipment, in particular to a hot melt adhesive filtering device.

Background

The hot melt adhesive is a plastic adhesive, the physical state of which changes with the change of temperature in a certain temperature range, and the chemical characteristics of which are unchanged, and the hot melt adhesive is nontoxic and tasteless, and belongs to an environment-friendly chemical product. Because the product is solid, the packaging, the transportation and the storage are convenient, and the product has no solvent, pollution and toxicity; and the production process is simple, the added value is high, the adhesive strength is high, the speed is high, and the like, so that the adhesive is favored.

However, in the production process of the hot melt adhesive, raw materials and additives of the hot melt adhesive may contain impurities such as solid particles, fibers, dust, etc., and if the impurities are not removed, adverse effects such as influence on adhesive strength, degradation of product quality may be caused in the hot melt adhesive. A filtering device is used in the hot melt adhesive production process to remove impurities.

In the prior art, chinese patent No. CN 217909294U discloses a filtering device for producing adhesive, which makes the bottom of the filtering box form negative pressure through the first negative pressure pump, so as to improve the filtering speed of the adhesive at the filtering plate and improve the filtering efficiency. The device can also be applied to the hot melt adhesive filtering process. However, the suction inlet of the first negative pressure pump is too close to the filter plate, and when the hot melt adhesive passes through the filter holes of the filter plate, filter drops are formed, and the hot melt adhesive is easily sucked into the first negative pressure pump in the dropping process, so that the loss of the hot melt adhesive is caused, the production efficiency of the hot melt adhesive is influenced, and after the hot melt adhesive is used for a long time, the suction inlet of the first negative pressure pump is easily blocked, so that the first negative pressure pump is damaged.

Therefore, it is necessary to provide a hot melt adhesive filtering device to solve the problem that the hot melt adhesive is easily pumped by the negative pressure pump so as to affect the production efficiency of the hot melt adhesive.

Disclosure of Invention

The embodiment of the utility model provides a hot melt adhesive filter plate device, which aims to solve the problem that the production efficiency of the hot melt adhesive is affected by the fact that the hot melt adhesive is easily pumped by a negative pressure pump.

A hot melt adhesive filter device comprising:

the box body is provided with a containing cavity;

the filter plate is arranged in the box body and used for filtering the hot melt adhesive, the accommodating cavity is divided into a filter cavity and a collecting cavity, and the collecting cavity is used for collecting the filtered hot melt adhesive;

the first air pump is provided with a suction inlet which is communicated with the collecting cavity;

the guide plate is arranged in the collecting cavity and is positioned between the suction inlet and the filter plate.

In one embodiment, the guide plate is obliquely arranged in the collecting cavity, and the guide plate completely shields the suction inlet when being observed along a first direction, wherein the first direction is a vertical direction.

In one embodiment, the number of the guide plates is two, the guide plates are symmetrically arranged in the collecting cavity, the symmetry axes of the guide plates are parallel to the first direction, and a gap exists between the two guide plates when the guide plates are observed along the first direction, so that the filtered hot melt adhesive flows out of the guide plates.

In one embodiment, the box body comprises a bottom wall and a side wall connected to the bottom wall, the first air pump comprises an air inlet piece and a connecting pipe, the connecting pipe is communicated with the air inlet piece, the air inlet piece is located in the collecting cavity, the air inlet is formed in the air inlet piece, and the air inlet is located on one side, close to the side wall of the box body, of the air inlet piece.

In one embodiment, the hot melt adhesive filtering device comprises a dredging mechanism, one end of the dredging mechanism is arranged in the filter cavity, the filter plate is provided with a filter hole, and the dredging mechanism is used for dredging the filter hole.

In one embodiment, the dredging mechanism comprises a second air pump, a telescopic rod, a liquid suction box connected with the telescopic rod and a liquid suction pipe communicated with the liquid suction box, the second air pump is communicated with the liquid suction box, the second air pump, the liquid suction box and the liquid suction pipe are located in the filter cavity, one end, away from the liquid suction box, of the liquid suction pipe is used for being abutted against the filter plate and communicated with the filter hole, and impurities in the filter hole are sucked into the liquid suction box through the liquid suction pipe.

In one embodiment, the dredging mechanism comprises a cleaning plate, the cleaning plate is arranged at one end, far away from the liquid suction box, of the liquid suction pipe, a through hole is formed in the cleaning plate, the through hole is communicated with the liquid suction pipe and the filter cavity, and the diameter of the through hole is equal to the outer diameter of the liquid suction pipe.

In one embodiment, the hot melt adhesive filtering device comprises a flexible member, wherein one end of the liquid suction pipe away from the liquid suction box is connected with the flexible member, the maximum diameter of the flexible member is denoted as m, and the diameter of the through hole is denoted as n, so that the relation is satisfied: n is more than or equal to 1.1m and less than or equal to 1.3m.

In one embodiment, the hot melt adhesive filtering device comprises a heating plate, wherein the heating plate is arranged in the filtering cavity and is used for heating the hot melt adhesive.

In one embodiment, the hot melt adhesive filter device includes a vibrator coupled to the filter plate for vibrating the filter plate.

The hot melt adhesive filtering device has the following beneficial effects:

the hot melt adhesive filtering device comprises a box body, a filter plate, a first air pump and a guide plate, wherein the box body is provided with a containing cavity, the filter plate is arranged on the box body and used for filtering hot melt adhesive, the containing cavity is divided into a filtering cavity and a collecting cavity, and the collecting cavity is used for collecting filtered hot melt adhesive; the first air pump is provided with a suction inlet which is communicated with the collecting cavity; the guide plate is arranged in the collecting cavity and is positioned between the suction inlet and the filter plate. By arranging the guide plate between the suction inlet and the filter plate, the hot melt adhesive can be prevented from dripping and is pumped by the first air pump. Therefore, the loss of the hot melt adhesive can be reduced, and the production efficiency and the product quality are improved. Secondly, through effective filtration and reduction hot melt adhesive loss, the device can improve the production efficiency of hot melt adhesive. The adverse effect and production interruption of the hot melt adhesive are reduced, and the stability and continuity of the production line are improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a hot melt adhesive filter device according to an embodiment;

FIG. 2 is an exploded view of a hot melt adhesive filter device according to one embodiment;

FIG. 3 is a cross-sectional view of the hot melt adhesive filter plate apparatus shown in FIG. 1 taken along line P-P;

FIG. 4 is a cross-sectional view of the hot melt adhesive filter device shown in FIG. 1 taken at an alternative angle P-P;

FIG. 5 is a schematic view of a first air pump according to an embodiment;

FIG. 6 is a schematic diagram of a dredging mechanism and a filter plate according to an embodiment.

Reference numerals:

10. a hot melt adhesive filtering device; 11. a case; 11a, a receiving cavity; 111a, a filter chamber; 111b, collection chamber; 112. a bottom wall; 113. a sidewall; 12. a filter plate; 121a, a filter hole; 13. a first air pump; 131. an air intake; 131a, a suction inlet; 132. a connecting pipe; 14. a guide plate; 15. a dredging mechanism; 151. a second air pump; 152. a telescopic rod; 153. a liquid suction box; 154. a pipette; 155. a cleaning plate; 155a, through holes; 16. a flexible member; 17. a heating plate; 18. a vibrator.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-6, the utility model discloses a hot melt adhesive filtering device 10, wherein the hot melt adhesive filtering device 10 comprises a box body 11, a filter plate 12, a first air pump 13 and a guide plate 14, the box body 11 is provided with a containing cavity 11a, the filter plate 12 is arranged on the box body 11 for filtering hot melt adhesive, the containing cavity 11a is divided into a filtering cavity 111a and a collecting cavity 111b, and the collecting cavity 111b is used for collecting filtered hot melt adhesive; the first air pump 13 is provided with an air suction port 131a, and the air suction port 131a is communicated with the collecting cavity 111 b; the guide plate 14 is provided in the collection chamber 111b and is located between the suction port 131a and the filter sheet 12.

The filter plate 12 divides the accommodating chamber 11a into a filter chamber 111a and a collecting chamber 111b, the hot melt adhesive to be filtered is introduced into the filter chamber 111a, and the hot melt adhesive to be filtered is stored, and the collecting chamber 111b is used for storing the filtered hot melt adhesive. The suction port 131a of the first air pump 13 communicates with the collection chamber 111b so that the collection chamber 111b generates a negative pressure so that the hot melt adhesive can pass through the filter sheet 12 quickly and flow into the collection chamber 111b, and the hot melt adhesive can be effectively filtered in the apparatus by using the filter sheet 12 and the partition chamber design. The filter plate 12 can filter impurities and solid particles in the hot melt adhesive, and ensures the quality and purity of the filtered hot melt adhesive. The filtered hot melt adhesive can be collected in the dedicated collection chamber 111b due to the presence of the filter plate 12 and the collection chamber 111 b. Thus, the filtered hot melt adhesive can be conveniently collected and treated, and the workload of maintenance and cleaning is reduced. Next, by providing the guide plate 14 between the suction port 131a and the filter sheet 12, the dropped hot melt adhesive can be prevented from being sucked by the first air pump 13. Therefore, the loss of the hot melt adhesive can be reduced, and the production efficiency and the product quality are improved. Through effective filtration and reduction hot melt adhesive loss, the device can improve the production efficiency of hot melt adhesive, reduces the probability of the adverse effect and the production interruption of hot melt adhesive, has improved the stability and the continuity of production line.

It should be noted that, the shape of the case 11 may be a column, a cuboid, or a cube, and in this embodiment, the case 11 is a cuboid, including a bottom wall 112 and a side wall 113, and the bottom wall 112 and the side wall 113 enclose a receiving cavity 11a. The bottom wall 112 may be rectangular or square, the side wall 113 may be rectangular, the filter plate 12 is fixedly connected to the side wall 113 of the housing 11, the filter plate 12 is identical to the bottom wall 112 in shape, and the guide plate 14 may be square or arc. The collection chamber 111b and the filter chamber 111a are square, and may be rectangular or square.

Referring to fig. 3 and 4, specifically, in some embodiments, the guide plate 14 is disposed obliquely in the collection chamber 111b, and the guide plate 14 completely shields the suction port 131a as viewed in a first direction, wherein the first direction is a vertical direction.

In the present embodiment, one end of the guide plate 14 is fixedly connected to the side wall 113 of the housing 11, and the other end extends to the center of the collection chamber 111b, and the guide plate 14 is positioned between the suction port 131a and the filter sheet 12, and completely blocks the suction port 131a. The purpose of this design is to prevent the hot melt adhesive that has dropped from being sucked in by the first air pump 13. Since the suction port 131a communicates with the collection chamber 111b and generates negative pressure, the dropped hot melt adhesive may be sucked into the air pump without being blocked by the guide plate 14, resulting in loss of the hot melt adhesive and malfunction of the apparatus. By providing the guide plate 14, the hot melt adhesive can be effectively prevented from dripping into the suction port 131a, the loss of the hot melt adhesive can be reduced, and the production efficiency and the product quality can be improved. Secondly, the inclined arrangement of the guide plate 14 is beneficial to drainage, the hot melt adhesive filtered by the filter plate 12 drops onto the guide plate 14, and the inclined arrangement of the guide plate 14 can guide the filtered hot melt adhesive to flow to the central position of the collecting cavity 111b and then flow to the bottom wall 112 of the box 11 under the action of gravity.

Specifically, the number of the guide plates 14 is two, and the guide plates 14 are symmetrically disposed in the collecting cavity 111b, and the symmetry axis thereof is parallel to the first direction, and a gap exists between the two guide plates 14 when viewed along the first direction, so that the filtered hot melt adhesive flows out of the guide plates 14.

In the present embodiment, the guide plates 14 are symmetrically disposed in the collection chamber 111b with their symmetry axes parallel to the first direction. Through the slope setting of deflector 14, when hot melt adhesive drips on deflector 14, the shape and the inclination of deflector 14 will guide hot melt adhesive to flow to the central point of collecting chamber 111b, flows to the diapire 112 of box 11 by gravity's effect again, is favorable to preventing that filtered hot melt adhesive from splashing to lateral wall 113 after naturally dripping to diapire 112 like this.

With continued reference to fig. 5, in some embodiments, the housing 11 includes a bottom wall 112 and a side wall 113 connected to the bottom wall 112, the first air pump 13 includes an air intake member 131 and a connecting tube 132, the connecting tube 132 is connected to the air intake member 131, the air intake member 131 is located in the collection chamber 111b, the air intake 131a is located in the air intake member 131, and the air intake 131a is located on a side of the air intake member 131 adjacent to the side wall 113 of the housing 11.

In the present embodiment, by providing the suction port 131a on the side of the air intake member 131 near the side wall 113 of the case 11, the hot melt adhesive can be prevented from directly entering the suction port 131a after dripping and being sucked by the first air pump 13. When the hot melt adhesives are dropped, they do not directly contact or come close to the suction port 131a due to the position of the suction port 131a, thereby reducing the possibility of being sucked into the air pump. Second, preventing the hot melt adhesive from being sucked into the first air pump 13 can prevent the hot melt adhesive from entering the air pump to cause blockage or damage. This helps to maintain normal operation of the device, reduces maintenance and repair requirements, and improves stability and reliability of the device.

It should be noted that, the first air pump 13 further includes a pump body fixedly connected to the outer wall of the housing 11, one end of the connecting tube 132 is connected to the pump body, and the other end is connected to the air inlet 131.

Referring to fig. 3, 4 and 6, in some embodiments, the hot melt adhesive filtering apparatus 10 includes a dredging mechanism 15, one end of the dredging mechanism 15 is disposed in the filter cavity 111a, the filter plate 12 is provided with a filter hole 121a, and the dredging mechanism 15 is used for dredging the filter hole 121a.

The dredging mechanism 15 is used to remove impurities, solid particles or other obstructions that may accumulate in the filter holes 121a. When the filter holes 121a are blocked by impurities or particles, the dredging mechanism 15 can abut against the filter plate 12 and perform cleaning operation on the filter holes 121a so as to restore the normal channel and the filtering function of the filter plate 12. Periodic cleaning of the filter holes 121a prevents excessive clogging and damage to the filter plate 12, thereby extending the useful life of the filter plate 12. The use of the deoccluding mechanism 15 can effectively clear the plug in the filter aperture 121a, maintain the filter plate 12 in a good condition, and reduce the need for more frequent replacement or repair.

In some embodiments, the dredging mechanism 15 includes a second air pump 151, a telescopic rod 152, a suction box 153 connected to the telescopic rod 152, and a suction pipe 154 communicated with the suction box 153, the second air pump 151 is communicated with the suction box 153, the second air pump 151, the suction box 153, and the suction pipe 154 are located in the filter chamber 111a, one end of the suction pipe 154 away from the suction box 153 is used for abutting the filter plate 12, and is communicated with the filter hole 121a, so that impurities in the filter hole 121a are sucked into the suction box 153 through the suction pipe 154.

Specifically, the second air pump 151 is used to generate negative pressure in the liquid suction tank 153. When the filter hole 121a is clogged, the telescopic rod 152 brings the suction box 153 and the suction pipe 154 to the vicinity of the filter sheet 12, and the end of the suction pipe 154 contacts the filter hole 121a. Then, negative pressure is generated to the suction tank 153 by operating the second air pump 151 so that the impurities in the filter holes 121a are drawn into the pipette 154, and then are transferred into the suction tank 153 through the pipette 154. This process clears the plugs in the filter holes 121a, restores the normal filtering function of the filter sheet 12, and improves the practicality of the hot melt adhesive filter device 10.

The filter sheet 12 is provided with a plurality of filter holes 121a, the number of the pipettes 154 is set corresponding to the number of the filter holes 121a, and the positions of the pipettes 154 are set corresponding to the positions of the filter holes 121a, and the diameter of the inner wall of the pipettes 154 is larger than the diameter of the filter holes 121a so as to suck more impurities. The hot melt adhesive filtering device 10 further comprises a telescopic bracket, the telescopic bracket comprises a connecting plate and two supporting legs fixedly connected to the connecting plate, the connecting plate is fixedly connected to one end of the telescopic rod 152, which is far away from the liquid suction box 153, the two supporting legs are respectively arranged on two opposite sides of the telescopic rod 152, the supporting legs are telescopic, so that the liquid suction box 153 can shake when the telescopic rod 152 drives the liquid suction box 153 to move, and the liquid suction box 153 can shake due to the arrangement of the two supporting legs, which is beneficial to stable movement of the liquid suction box 153.

In some embodiments, the dredging mechanism 15 includes a cleaning plate 155, the cleaning plate 155 is disposed at one end of the pipette 154 far away from the pipette case 153, the cleaning plate 155 is provided with a through hole 155a, the through hole 155a is communicated with the pipette 154 and the filter cavity 111a, and the diameter of the through hole 155a is equal to the outer diameter of the pipette 154.

In the present embodiment, the dredging mechanism 15 includes a cleaning plate 155, and the cleaning plate 155 has the same shape as the filter sheet 12. The cleaning plate 155 is located at an end of the pipette 154 remote from the pipette tank 153, and has a through hole 155a. The number and positions of the through holes 155a are set corresponding to those of the pipettes 154, and the through holes 155a are equal in diameter to the pipettes 154 and communicate the pipettes 154 with the filter chamber 111a. The function of this arrangement is that after the filter hole 121a is dredged, when the telescopic rod 152 drives the pipette 154 to reset, the cleaning plate 155 can clean the outer wall of the pipette 154 through the existence of the through hole 155a. Specifically, as the pipette 154 is reset, the through-holes 155a of the cleaning plate 155 may contact the outer wall of the pipette 154, thereby removing residual hot melt adhesive or foreign substances on the outer wall of the pipette 154 during the reset process to ensure that the outer wall of the pipette 154 remains clean.

Referring to fig. 6, in some embodiments, the hot melt adhesive filtering device 10 includes a flexible member 16, one end of the pipette 154 remote from the pipette tank 153 is connected to the flexible member 16, the maximum diameter of the flexible member 16 is denoted as m, and the diameter of the through hole 155a is denoted as n, satisfying the relationship: n is more than or equal to 1.1m and less than or equal to 1.3m.

In this embodiment, the flexible member 16 is a semicircular silicone member, and the larger diameter end thereof is fixedly connected to the end of the pipette 154 remote from the pipette case 153. The flexible member 16 has deformable properties. The reason for the larger diameter is to ensure that the flexible member 16 has sufficient contact area and coverage when contacting the filter plate 12 and the pipette 154. The larger diameter end provides more extensive protection and cushioning, effectively reducing friction and wear between the pipette 154 and the cleaning plate 155. When the telescopic rod 152 drives the pipette 154 to pass through the through hole 155a and abut against the filter plate 12, the flexible piece 16 can avoid the rigid friction between the pipette 154 and the cleaning plate 155, so that the possibility of abrasion is reduced. Since the flexible member 16 is a soft silicone material, it provides a cushioning effect when the pipette 154 is in contact with the filter plate 12, reducing wear and damage due to friction. Second, the flexible member 16 has the ability to deform when the pipette 154 is reset. The larger diameter end of the flexible member 16 may be flipped down so that the remaining hot melt adhesive on the flexible member 16 may be removed. When the pipette 154 is returned to the original position, the deformation of the larger diameter end will push the remaining hot melt adhesive off the flexible member 16, thereby keeping the pipette 154 clean.

Referring to fig. 3 and 4, in some embodiments, the hot melt adhesive filter device 10 may further include a heating plate 17, the heating plate 17 being disposed within the filter cavity 111a for heating the hot melt adhesive.

In this embodiment, the heating plate 17 is fixedly connected to the inner wall of the filter chamber 111a, and the heating plate 17 functions to supply heat energy to heat the hot melt adhesive. The temperature of the hot melt adhesive can be increased by the heating action of the heating plate 17 when the hot melt adhesive passes through the filter cavity 111a. This helps to maintain the hot melt adhesive within the desired operating temperature range to ensure proper tack and flow. Hot melt adhesives are high viscosity materials that can become too viscous at low temperatures to handle. By the heating action of the heating plate 17, the viscosity of the hot melt adhesive can be reduced, making it easier to flow and handle.

In some embodiments, the hot melt adhesive filter device 10 can further include a vibrator 18, the vibrator 18 being coupled to the filter plate 12 for vibrating the filter plate 12.

In this embodiment, the hot melt adhesive filter device 10 may include two vibrators 18, with the vibrators 18 being fixedly attached to the filter sheet 12 and adapted to vibrate the filter sheet 12. The vibrator 18 functions to facilitate the hot melt adhesive filtering process by vibrating the filter plate 12. As the hot melt adhesive passes through the filter sheet 12, the vibrator 18 generates mechanical vibrations, which vibrate the filter sheet 12 and the filter holes 121a thereon. This structure is advantageous in that the filter efficiency is improved, and the vibration filter plate 12 can displace the hot melt adhesive residues or impurities in the filter holes 121a, break their adhesion force, and thereby promote the hot melt adhesive to pass through the filter holes 121a better. This helps to improve the filtration efficiency and prevent clogging of the filter holes 121a, ensuring smooth flow of the hot melt adhesive.

Specifically, the hot melt adhesive filtering device 10 disclosed by the utility model has the following working principle:

firstly, hot melt adhesive to be filtered is introduced into a filter cavity 111a, a first air pump 13, a heating plate 17 and a vibrator 18 are started, the first air pump 13 enables a negative pressure to be formed in a collecting cavity 111b, and a pressure difference is formed between the filter cavity 111a and the collecting cavity 111b, so that the hot melt adhesive can flow into the collecting cavity 111b in an accelerating mode, and the filtering efficiency is improved. The heating plate 17 heats the hot melt adhesive in the filter chamber 111a to ensure proper viscosity and fluidity of the hot melt adhesive, and the vibrator 18 vibrates the holding filter plate 12 to accelerate the flow of the hot melt adhesive. When the filter holes 121a of the filter plate 12 are blocked, the dredging mechanism 15 is started, the telescopic rod 152 drives the liquid suction box 153 and the liquid suction pipe 154 to move towards the filter plate 12, when the liquid suction pipe 154 is abutted against the filter plate 12, the second air pump 151 starts to operate, so that the liquid suction box 153 forms negative pressure, and therefore impurities and the like in the filter holes 121a are blocked and flow into the liquid suction box 153 through the liquid suction pipe 154, and when the dredging of the filter holes 121a is completed, the dredging mechanism 15 is reset.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A hot melt adhesive filter device, comprising:

the box body is provided with a containing cavity;

the filter plate is arranged in the box body and used for filtering the hot melt adhesive, the accommodating cavity is divided into a filter cavity and a collecting cavity, and the collecting cavity is used for collecting the filtered hot melt adhesive;

the first air pump is provided with a suction inlet which is communicated with the collecting cavity;

the guide plate is arranged in the collecting cavity and is positioned between the suction inlet and the filter plate.

2. The hot melt adhesive filter apparatus of claim 1, wherein the guide plate is disposed obliquely in the collection chamber, the guide plate completely shielding the suction port as viewed in a first direction, wherein the first direction is a vertical direction.

3. The hot melt adhesive filter apparatus according to claim 2, wherein the number of the guide plates is two, and the guide plates are symmetrically disposed in the collecting chamber, and the symmetry axis thereof is parallel to the first direction, and a gap exists between the two guide plates when viewed along the first direction, so that the filtered hot melt adhesive flows out of the guide plates.

4. The hot melt adhesive filter apparatus of claim 1, wherein the housing comprises a bottom wall and a side wall connected to the bottom wall, the first air pump comprises an air inlet member and a connecting tube, the connecting tube is connected to the air inlet member, the air inlet member is located in the collecting chamber, the air inlet is located in the air inlet member, and the air inlet is located at a side of the air inlet member adjacent to the side wall of the housing.

5. The hot melt adhesive filter device of claim 1, wherein the hot melt adhesive filter device comprises a dredging mechanism, one end of the dredging mechanism is arranged in the filter cavity, the filter plate is provided with a filter hole, and the dredging mechanism is used for dredging the filter hole.

6. The hot melt adhesive filter device according to claim 5, wherein the dredging mechanism comprises a second air pump, a telescopic rod, a liquid suction box connected to the telescopic rod and a liquid suction pipe communicated with the liquid suction box, the second air pump is communicated with the liquid suction box, the second air pump, the liquid suction box and the liquid suction pipe are located in the filter cavity, one end of the liquid suction pipe, which is far away from the liquid suction box, is used for abutting the filter plate and is communicated with the filter hole, so that impurities in the filter hole are sucked into the liquid suction box through the liquid suction pipe.

7. The hot melt adhesive filter device according to claim 6, wherein the dredging mechanism comprises a cleaning plate, the cleaning plate is arranged at one end of the liquid suction pipe far away from the liquid suction box, the cleaning plate is provided with a through hole, the through hole is communicated with the liquid suction pipe and the filter cavity, and the diameter of the through hole is equal to the outer diameter of the liquid suction pipe.

8. The hot melt adhesive filter device according to claim 7, wherein the hot melt adhesive filter device comprises a flexible member to which one end of the pipette remote from the pipette tank is connected, a maximum diameter of the flexible member is denoted as m, and a diameter of the through hole is denoted as n, satisfying the relation: n is more than or equal to 1.1m and less than or equal to 1.3m.

9. The hot melt adhesive filter apparatus of any one of claims 1-8, wherein the hot melt adhesive filter apparatus comprises a heating plate disposed within the filter cavity for heating the hot melt adhesive.

10. The hot melt adhesive filter apparatus according to any one of claims 1 to 8, comprising a vibrator coupled to the filter sheet for vibrating the filter sheet.